In a potentiometer experiment, the balancing length for a cell was found to be 1.20 m. Now, a resistance of 10 is connected across the term...

In a potentiometer experiment, the balancing length for a cell was found to be 1.20 m. Now, a resistance of 10 is connected across the terminals of this cell and the balancing length becomes 80 cm. The internal resistance of this cell is

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